Saturn SW2 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Saturn SW2 and How to Fix Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Saturn SW2 cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a Saturn SW2 cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When the throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

Troubleshooting Cruise Control Issues in a Saturn SW2

When troubleshooting cruise control issues in your Saturn SW2, begin with the simplest solutions before delving into more complex diagnostics. Start by checking the fuse related to the cruise control system, as a blown fuse can often be the culprit behind a non-functioning system. Next, inspect the brake light switch; if it’s faulty, it may prevent the cruise control from engaging. If these components are functioning correctly, examine the cruise control cable for proper tension; an overly tight or loose cable can lead to erratic behavior, such as the system accelerating unexpectedly or shutting down abruptly. Additionally, ensure that the control module and throttle are in good working order, as issues here can also disrupt cruise control functionality. Always remember to stay alert while driving, as sudden failures can pose safety risks. By following this diagnostic approach, you can systematically identify and resolve the issues affecting your cruise control system.

What Could Cause the Cruise Control to Malfunction in a Saturn SW2?

When diagnosing cruise control malfunctions in a Saturn SW2, it's essential to consider several common issues that could be affecting the system. Start by checking the fuses, as a blown fuse can disrupt the power supply to the cruise control, rendering it inoperable. Next, inspect the brake pedal position sensor, as a faulty sensor can mistakenly signal that the brakes are engaged, preventing the cruise control from activating. Additionally, examine the throttle body for any malfunctions, as issues here can directly impact the cruise control's functionality. The brake pedal switch is another critical component; if it's defective, it may not allow the cruise control to engage properly. Don't overlook the PRNDL or shifter position switch, as problems here can also lead to cruise control issues. For older models, a broken vacuum line can be a hidden culprit, so it's worth checking for any leaks or disconnections. By systematically investigating these areas, you can effectively diagnose and potentially fix the cruise control problems in your Saturn SW2.

Why is the Cruise Control Not Working in a Saturn SW2?

When the cruise control in your Saturn SW2 fails to operate, it’s crucial to address the issue promptly, as neglecting it can lead to safety risks and further complications. Common culprits include a blown fuse, a malfunctioning brake pedal switch, or problems within the throttle control system. Since cruise control is designed to disengage when the brake pedal is pressed, a faulty brake switch may cause the system to believe the brakes are engaged, preventing activation. Additionally, older models may experience issues due to broken vacuum lines. To effectively troubleshoot, start by checking the fuses associated with the cruise control system, inspecting the brake pedal and throttle body for any visible damage, and using a diagnostic scanner to pinpoint any underlying issues, including the speed sensor's functionality. Addressing these problems not only restores your cruise control but also ensures a safer driving experience, making it essential to act quickly.

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